77473834 has 4 divisors (see below), whose sum is σ = 116210754. Its totient is φ = 38736916.

The previous prime is 77473829. The next prime is 77473859. The reversal of 77473834 is 43837477.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43837477 = 4751 ⋅9227.

It can be written as a sum of positive squares in only one way, i.e., 75637809 + 1836025 = 8697^2 + 1355^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19368457 + ... + 19368460.

Almost surely, 2^77473834 is an apocalyptic number.

77473834 is a deficient number, since it is larger than the sum of its proper divisors (38736920).

77473834 is a wasteful number, since it uses less digits than its factorization.

77473834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38736919.

The product of its digits is 395136, while the sum is 43.

The square root of 77473834 is about 8801.9221764340. The cubic root of 77473834 is about 426.3029614020.

The spelling of 77473834 in words is "seventy-seven million, four hundred seventy-three thousand, eight hundred thirty-four".